摘要
针对以商品蒸汽作为热源的传统蒸馏法海水淡化造水成本较高的问题,结合沿海钢铁、石化等企业大量的余热无法找到合适利用途径的现状,提出余热驱动低温蒸馏工艺,最大限度地利用低品位余热,避免能源浪费及环境污染。文中提出两种利用工业低品位热水生产淡水的海水淡化工艺配置流程,通过建立海水淡化系统热力学模型,以淡水产量10000 m^3/d为例,比较造水比、传热面积等系统性能参数,分析废热水给水温度、回水温度、废热水流量对海水淡化产水量的影响。为利用低品位能源如太阳能、钢铁、石化行业废热水等过程余热进行海水淡化提供设计数据依据和理论支撑。
Aiming at high production cost of traditional distilled seawater desalination technology with the commercial steam as the heating source, combining present situation of large amount industrial waste heat, such as steel and petrochemical plants in coastal area not finding the suitable use way, the new distillation process using low temperature waste heat was developed to use low grade waste heat maximally and avoid the energy waste and environmental pollution. Two kinds of seawater desalination processes were designed for fresh water production by using low grade industrial waste heat, taking fresh water production quantity of 10,000 m^3/d as an example, through setting up the thermodynamic model of seawater desalination system, the performance parameters such as GOR and heat transfer area were compared, and the effect of key parameters such as feed-water temperature, return water temperature and flow rate of waste hot water on fresh water production quantity was analyzed. The study provides the design reference and theoretical support for the seawater desalination driven by low grade energies, such as solar energy and waste hot water in iron and steel and petrochemical industries.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第6期1692-1698,共7页
Acta Energiae Solaris Sinica
基金
"十二五"国家科技支撑计划课题(2014BAB04B02
2015BAB08B01)
天津市自然科学基金(16JCYBJC19400)
关键词
低温余热
蒸馏海水淡化
工艺流程
系统性能
low temperature waste heat
distilled seawater desalination
process flow
system performance
